79390216 has 16 divisors (see below), whose sum is σ = 148952700. Its totient is φ = 39669504.

The previous prime is 79390211. The next prime is 79390229. The reversal of 79390216 is 61209397.

It can be written as a sum of positive squares in 2 ways, for example, as 79388100 + 2116 = 8910^2 + 46^2 .

It is not an unprimeable number, because it can be changed into a prime (79390211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19180 + ... + 22948.

Almost surely, 2^79390216 is an apocalyptic number.

It is an amenable number.

79390216 is a deficient number, since it is larger than the sum of its proper divisors (69562484).

79390216 is a wasteful number, since it uses less digits than its factorization.

79390216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6408 (or 6404 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 79390216 is about 8910.1187421942. The cubic root of 79390216 is about 429.7893614095.

The spelling of 79390216 in words is "seventy-nine million, three hundred ninety thousand, two hundred sixteen".